Home / 8,720.64-12,038.76-5,940.72

Finding the Fourth Proportional to 8,720.64, 12,038.76 and 5,940.72

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Solution

The fourth proportional to 8,720.64, 12,038.76 and 5,940.72 is: 8,201.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.64 : 12,038.76 = 5,940.72 : x
  2. Step 2: Convert to fraction form
    8,720.64/12,038.76 = 5,940.72/x
  3. Step 3: Cross multiply
    8,720.64x = 12,038.76 × 5,940.72
  4. Step 4: Simplify right side
    8,720.64x = 71,518,902.31
  5. Step 5: Solve for x
    x = 71,518,902.31/8,720.64
  6. Step 6: Final answer
    x = 8,201.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.